Isomerization of cresols

Details Isomerization of cresols Isomerization of cresols

1986-06-16

1987-09-01

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

502 77, C07C 3748, C07C 3906

Patent

active

046910638

ABSTRACT:
An improvement in a process for the isomerization of cresols may be obtained by effecting the isomerization reaction of a cresol in the presence of a phosphorous containing crystalline aluminosilicate zeolite catalyst. The added phosphorous provides stability and longer life to the catalyst as well as more stable selectivity to the desired isomers. The isomerization reaction is effected at temperatures ranging from about 350.degree. C. to about 500.degree. C., pressures ranging from about 1 to about 60 atmospheres, a Liquid Hourly Space Velocity that ranges from 1 to about 5 hours.sup.-1, with the abovementioned catalyst containing from about 1% to about 8% by weight phosphorous.

REFERENCES:
patent: 3702886 (1972-11-01), Argauer et al.
patent: 3965208 (1976-06-01), Butter et al.
patent: 4283571 (1981-08-01), Keim et al.
patent: 4503269 (1985-03-01), Engel et al.
patent: 4581214 (1986-04-01), Young

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